• Pawel Moll's avatar
    mfd: Versatile Express system registers driver · 88e0abcd
    Pawel Moll authored
    This is a platform driver for Versatile Express' "system
    register" block. It's a random collection of registers providing
    the following functionality:
    
    - low level platform functions like board ID access; in order to
      use those, the driver must be initialized early, either statically
      or based on the DT
    
    - config bus bridge via "system control" interface; as the response
      from the controller does not generate interrupt (yet), the status
      register is periodically polled using a timer
    
    - pseudo GPIO lines providing MMC card status and Flash WP#
      signal control
    
    - LED interface for a set of 8 LEDs on the motherboard, with
      "heartbeat", "mmc0" and "cpu0" to "cpu5" as default triggers
    Signed-off-by: default avatarPawel Moll <pawel.moll@arm.com>
    88e0abcd
Makefile 5.34 KB